基于图形数据库的电力网络拓朴方法的研究与应用

【作者】 孙庆；

【导师】 陈庆伟； 刘仁琪；

【作者基本信息】 南京理工大学 ， 检测技术与自动化装置， 2008， 硕士

【摘要】 本文研究基于图形数据库的电力网络拓扑方法,即根据电网中开关、刀闸等设备的状态以及各种元件的连接关系产生电网计算用的母线和网络模型,其结果用于网络分析的各种应用,这些应用包括“开列操作票”、“潮流计算”、“故障电流计算”等。基于网络拓扑的应用能够帮助变电站运行人员快速、准确、全面地掌握电力系统的实际运行方式,预测和分析电力系统的运行趋势,对电力系统中发生的各种问题进行正确的处理。针对目前电力网络监控系统中存在的数据库不完整、不准确,和拓扑计算方法复杂、资源消耗大、延时长等不足,在综合了国内研究成果和需求分析的基础上,重新设计了图形数据库,包含了电力网络中所有设备的参数和连接信息,为网络中其他的分析软件提供完整而可靠的数据基础;研究对网络电气元件连接关系的数学建模方法,完全基于数据库,不再依赖图形,采用广度优先的方法对网络中所有设备建立起全面的数学描述方式;改进了基于广度优先搜索法的网络拓扑方法,简化了计算方法,节约了大量的时间。本系统目前已经使用在安徽合肥的监控五防系统上,取得了良好的效果。更多还原

【Abstract】 In this dissertation, a research has been made on power network topology analysis method of graphic database. According to the status of network switch and other equipment, as well as their linking relations generate the bus and the network model, which are used in analysis of the power network applications. These applications include "Graphic order issuing", "Flow calculation", "Fault current calculation", etc. These can help monitor staff get the real-time running status of power network rapidly, accurately and comprehensively, and help to forecast the running trends in the power network, and deal with various problems inthe run-time power network.According to the deficiency of incomprehensive, inaccurate database, and complicated calculation method, resource consumption in monitor system of power network. Based on the domestic research and requirement analysis, the graphic database is redesigned, including parameters and linking relations of all the equipments in the power network. It provides complete and reliable database for the other software. The mathematical modeling method of linking relations is based on database and not on graphics. The facilitative, comprehensive mathematical description method is established with breadth-first approach for all the network equipments. This paper improves the breadth-first search of the network topology method, simplifies the calculation, and saves lots of time.This system has been used in anti-maloperation system in Hefei city, Anhui province. The running results have proved that the system reached expectant request in use.更多还原